Modeling WiFi Active Power/Energy Consumption in Smartphones

We conduct the first detailed measurement study of the properties of a class of WiFi active power/energy consumption models based on parameters readily available to smartphone app developers. We first consider a number of parameters used by previous models and show their limitations. We then focus o...

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Bibliographic Details
Main Authors: Li Sun, Sheshadri, Ramanujan K., Wei Zheng, Koutsonikolas, Dimitrios
Format: Conference Proceeding
Language:English
Subjects:
Accuracy
energy
Energy consumption
IEEE 802.11 Standards
Mathematical model
power
Power demand
Smart phones
smartphones
Throughput
WiFi
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Summary:We conduct the first detailed measurement study of the properties of a class of WiFi active power/energy consumption models based on parameters readily available to smartphone app developers. We first consider a number of parameters used by previous models and show their limitations. We then focus on a recent approach modeling the active power consumption as a function of the application layer throughput. Using a large dataset and an 802.11n-equipped smartphone, we build four versions of a previously proposed linear power-throughput model, which allow us to explore the fundamental trade off between accuracy and simplicity. We study the properties of the model in relation to other parameters such as the packet size and/or the transport layer protocol, and we evaluate its accuracy under a variety of scenarios which have not been considered in previous studies. Our study shows that the model works well in a number of scenarios but its accuracy drops with high throughput values or when tested on different hardware. We further show that a non-linear model can greatly improve the accuracy in these two cases.
ISSN:1063-6927
2575-8411
DOI:10.1109/ICDCS.2014.13